Left rear window

[BriceW at webtv.net]

The left rear window wont go up or down.
No power getting to it. The switch for it in the front works fine and
the switch on the window itself works fine. The regulator looks fine and
the wire is tight. Checked the wiring in the door boot on the rear left
door and found no breaks.
Could it be a bad window regulator motor?
Or where would would the next logical place be to look for a break in
the wiring?